Hi, last saturday one of the golfish in the tank got inflated. I tried to take pics but theyarent good.. He is behaving normally and dosent show nay other signs, active and eating and he's scales are normal as well and he also has one red patch on the bottom of his belly. I started treatment for the whole tank 2 days after it started with kanaplex assuming this is some kind of bacterial infection. So far no improvment. I really appreciate any advice or ideas to ehat is this and how to treat,thank you!